NANOTECHNOLOGY IN CIVIL ENGINEERING SEMINAR PRESENTATION

1. NANOTECHNOLOGY IN
CIVIL ENGINEERING
3 February 2017 1

2. •Concept Of Construction
•Disadvantages faced in the field of construction
Weakened with progress of time
Results in Loss of Life and Capital
•Importance of Nanotechnology
In design and Construction
Lighter Structure
Stronger Structural Composites
3 February 2017 2

3. Low maintenance cost
Better properties of cementitious material
Increasing the reflectivity of glass
NANOTECHNOLOGY
• Engineering of functional system at molecular
level
• Size - 0.1nm – 1.00nm
3 February 2017 3

4. *Nano materials in concrete
Speed up the of C-S-H gel formation
Improve mechanical and durability properties
*Nano particles added are
Nano Silica (SiO2)
Improves particle packing
Augments strength of hardened concrete
3 February 2017 4

5. Repulsion towards water absorption
Prevents calcium leaching
 Fly ash
Reduce the curing time
Improves concrete stability
Increases the strength of concrete
3 February 2017 5

6. Carbon Nanotubes
Improves Mechanical Properties
Increases Compressive Strength and Flexural Strength
Disadvantage - formation of clumps
 Nano Titanium (TiO2)
Self Cleansing
Excellent Reflective Coating
Block UV and Infrared Rays
3 February 2017 6

7. Self Compacting Concrete
Less energy needed to produce concrete structures
Reduced wear and tear on formwork
Improves Mechanical properties
Increases Compressive Strength and Flexural
Strength
Disadvantage - Formation of clumps
3 February 2017 7

8. Fig.1 The bridge across the River
Fulda in Kassel, made of ultra
high performance concrete
Fig.2 Building made by using self-cleaning
concrete (Church ‘‘Dives in
Misericordia”, Rome, Italy)
3 February 2017 8

9. • High Strength Steel Cables
Refinement of cementite phase of steel to a
nano-size are stronger
Reduce materials in suspension bridges and
precast concrete
Reduce costs and period of construction
3 February 2017 9

10. • Fatigue
Progressive and localized structural damage
Occurs under repeated loading and unloading
At stresses lower than the yield stress of structure
Shortening of life period
Adding copper nano particle
 Provide a smooth and even surface
Reduces stress and limit fatigue
3 February 2017 10

11. • Carbon Nanotubes
Light in weight
High strength
High thermal & electrical conductivity
 Can with stand high compressive strength
Excellent in tensile strength compared to conventional
steel
Temperature in steel manufacturing – affect – CNT
properties
3 February 2017 11

12. •Two new products available
Sandvik Nanoflex
high strength and good ductility
Good weld ability
MMFX2
Three times stronger than normal steels
Corrosion resistance and strength
Lower maintenance costs
3 February 2017 12

13. Fig.3 Sandvik Nano Flex Fig.4 MMFX2
3 February 2017 13

14. Composed of nanotubes
namely Lignocelluloses
Provide self-sterilizing
surfaces and internal self repair
High Water Repellency
Resistance to Biological
Agents and Fire
Improve Water-Resistance
Fig.5 Nano Coatings For Floor Finishes
3 February 2017 14

15. * Self cleansing glass
* Nano TiO2 used
 Sterilizing
 Anti fouling properties
* Breaks down organic pollutant, volatile organic
compounds and bacterial compounds
3 February 2017 15

16. *Fire protection glass
 Silica Nano particles sandwiched between glass
panels
*Blocks light and heat coming in through windows
*Electro chromic coatings
Reduces energy use in cooling buildings
3 February 2017 16

17. Fig.6 Nano Coating On Glass Fig.7 Ultra Thin Glass Protective
Coating
3 February 2017 17

18. • Self-healing Capability
• Hydrophobic - Repels Water from Metal Pipe
• Protect Metal from Salt Water Attack
• Provide Better Adhesion and Transparency
• Lotus Spray - 20 times More Water Repellent than
smooth wax coating
• Reflect, Transmit Lights in Different Wavelength
3 February 2017 18

19. • Silica Aero Gel
provide : Aesthetic
Appearance and
Thermal Insulation
• TiO2 - Photo Catalytic
Process
Fig.8 Forth Bridge
3 February 2017 19

20. *Used as a Tough, Durable, High Temperature
Coating
* CNT’s with cementitious material provide Higher
Strength
* Cheaper Option compared to conventional insulation
3 February 2017 20

21.  Stearic Acid (Natural Saturated Vegetable Oil)
- Used In Grinding With Cement
Reduce Energy Use
Avoid Loss Of Strength
 Iron Nano Particles
Transform, Detoxify Chlorinated Hydrocarbons In
Ground Water
 Dendrimers - Enhance Environmental Clean-up
3 February 2017 21

22. * Prevents Formation Of Fog and Mist on windows and mirrors
* Improves Aesthetics and Performance of Exterior Surface
* Provide Thermal Protection and Insulation
Aero Gel Material
Light Transmitters
Eliminate Need Of Curtains
Moisture and Fungus Resistance
3 February 2017 22

23. Nano based wood protective
coating
Prevents water infiltration
Protection against UV rays
Prevents darkening of
surface
Nano covers on glass
Self cleaning
Antireflective coatings
Fig.9 Cleaning Ability Of Roof Tiles With
Hydrophobic Covers
3 February 2017 23

24. Anti-fog coatings
Water absorbent
Nano technology in energy production
Light emitting diodes with high energy
efficiency
Solar cells with transparency and aesthetic
characteristics
3 February 2017 24

25. *Influence Profound and Promising in Civil
Engineering
* Perfect Alternative Material
* Even though it is an extrapolation of current ones to
new scale
* Limitation - High Cost
*Concerns about environment and health
* Wide scope stands intact for this technology
3 February 2017 25

26. 1. Alsaffar, K. A.;(2014) “Review Of The Use Of Nanotechnology In
Construction Industry” International Journal Of Engineering
Research And Development.8(10):67-70
2. Faruk, N. M. A.; Chen, D. H.; Mushota,C.; Muya, M.; and
Walubita, L. F. (2014) “Application Of Nanotechnology In
Pavement Engineering: A Literature Review ” Application Of
Nanotechnology In Pavements, Geological Disasters, And
Foundation Settlement Control Technology GSP 244©ASCE 9-
16
3. Javad F. H. S, Zeynali R, Shahsavari F, Alamouti Z. M;(
2015)“Study of Nanotechnology Application in Construction
Industry.”
3 February 2017 26

27. 4. Mulenga, D.M. and Robery, P.C.(2010), “Can
Nanotechnology Address Today’s Civil Engineering
Challenges”, Structure Congress ©ASCE 609-621
5. Rana1, A. K.Rana, S. B. Kumari, A. and Kiran, V.(2009)
“Significance Of Nanotechnology In Construction
Engineering.”International Journal Of Recent Trends In
Engineering,©ACEEE,1(4)46-48
6. Syed Sabihuddin(2014) “Application Of Nanotechnology In
Civil Infrastructre”, Int. Journal of Engineering Research and
Applications,4(3)92-95
3 February 2017 27

28. 3 February 201728